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A simple plug-in engine using Reflection

, 26 Sep 2012 CPOL
This article describes how to create and use configurable plug-ins in your application.
using System;
using System.Linq;
using System.Configuration;
using System.Collections.Generic;

namespace PluginBase
    public abstract class ConfigurationBase : ConfigurationSection
        /// <summary>
        /// Opens the configuration section with the specified type and name
        /// </summary>
        /// <param name="sectionName">Configuration section's name</param>
        /// <param name="configPath">Configuration file's path</param>
        /// <returns>Instance of the configuration section's class</returns>
        public static T Open<T>(string sectionName, string configPath) where T : ConfigurationBase, new()
            T instance = new T();
            if (configPath.EndsWith(".config", StringComparison.InvariantCultureIgnoreCase))
                configPath = configPath.Remove(configPath.Length - 7);
                Configuration config = ConfigurationManager.OpenExeConfiguration(configPath);
                /* section not found */
                if (config.GetSection(sectionName) == null)
                    config.Sections.Add(sectionName, instance);

                    foreach (ConfigurationProperty p in instance.Properties)
                        ((T)config.GetSection(sectionName)).SetPropertyValue(p, p.DefaultValue, true);

                    /* section already exists */
                    instance = (T)config.Sections[sectionName];
            catch (ConfigurationErrorsException)
                if (instance == null)
                    instance = new T();
            return instance;

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Vitaly Zhukov
Software Developer
Russian Federation Russian Federation
No Biography provided

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